My UITableView won't scroll down through the end of the data! Why?

Decrease your tableView's height.

I know it's an old question and this is not an answer to your question, but a suggestion to improve your code so others can benefit.

You could write this:

if (indexPath.row >= 4 && indexPath.row <= 8) { // 4 and 8 inclusive
    cell.indentationLevel = 2;
}
cell.textLabel.text = @"";

Instead of this:

if(indexPath.row == 0){
    cell.textLabel.text = @"";
}else if(indexPath.row == 1){
    cell.textLabel.text = @"";
}else if(indexPath.row == 2){
    cell.textLabel.text = @"";
}else if(indexPath.row == 3){
    cell.textLabel.text = @"";
}else if(indexPath.row == 4){
    cell.indentationLevel = 2;
    cell.textLabel.text = @"";
}else if(indexPath.row == 5){
    cell.indentationLevel = 2;
    cell.textLabel.text = @"";
}else if(indexPath.row == 6){
    cell.indentationLevel = 2;      
    cell.textLabel.text = @"";
}else if(indexPath.row == 7){
    cell.indentationLevel = 2;      
    cell.textLabel.text = @"";
}else if(indexPath.row == 8){
    cell.indentationLevel = 2;      
    cell.textLabel.text = @"";
}else if(indexPath.row == 9){
    cell.textLabel.text = @"";
}else if(indexPath.row == 10){
    cell.textLabel.text = @"";
}else if(indexPath.row == 11){
    cell.textLabel.text = @"";
}else if(indexPath.row == 12){
    cell.textLabel.text = @"";
}else if(indexPath.row == 13){
    cell.textLabel.text = @"";
}else if(indexPath.row == 14){
    cell.textLabel.text = @"";
}else if(indexPath.row == 15){
    cell.textLabel.text = @"";
}else if(indexPath.row == 16){
    cell.textLabel.text = @"";
}else if(indexPath.row == 17){
    cell.textLabel.text = @"";
}else if(indexPath.row == 18){
    cell.textLabel.text = @"";
}

And if you happen to have different text for each case you could either use:

switch (indexPath.row) {
    case 0:
        cell.textLabel.text = @"";
        break;
        ...
    case 18:
        cell.textLabel.text = @"";
    default:
        break;
}

Or even better to put everything inside an NSArray (database...) and just loop through them by the index.

This helped me:

[self.tableView setContentInset:UIEdgeInsetsMake(0,0,65,0)];